Method of mounting for and by tubular devices.



J. H. ABBOTT.

METHOD OF MOUNTING FOR AND BY TUBULAR DEVICES.

APPLICATION FILED 00112, 1912.

1,105,590, Patented July 28,1914.

FILE 3 I VENTOR WITNESSES My A TTORNEY a tube in place.

JAMES HERMAN ABBOTT, OF PHILADELPHIA, PENNSYLVANIA.

. METHOD OF MOUNTING FOR AND BY TUBULAR DEVICES.

Specification of Letters Patent.

Patented July 28, 1914..

Original application filed June 16, 1911, Serial No. 633,518. Divided and this application filed October 12, 1912. Serial No. 725,366.

To all whom it may concern:

Be it known that I, JAMES HnnMAN Anno'r'r, a citizen of the United States, residing at 2534 South Twentieth street, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Method of Mounting for and by Tubular Devices, of which the following is a specification.

The purpose of my invention is to afford effective and simple concealed means for retaining tubular parts upon a support or spindle at any point thereon.

A further purpose of my invention is to stretch a tubular member sidewise by lugs or extensions upon the support, to draw the intermediate tube portions into a groove, recess or depression in the support and to restore the initial shape of the tube in the rear of the stretched part. I

A further purpose of my invention is to retain a tubular member or part connected therewith or supported thereon against longitudinal movement upon a support, for convenience here termed a spindle, by distortion of a tubular member through longitudinal movement thereof.

A further purpose of my invention is to form retaining, coiiperating grooves, or flattened portions upon a tubular member, so surrounded by other structure that it is not accessible from a lateral direction.

I have illustrated my invention by that form thereof which has in practice proved simplest, cheapest and most effective.

Figure l is a longitudinal section of a structure embodying my invention. Fig. 2 is a longitudinal section of the structure .of Fig. 1 taken at right angles thereto. Fig. 3 is a transverse section of Fig. 1 omitting the bristles thereof. Fig. 4 is a longitudinal section of the parts shown in Fig. 3 prior to their assemblage. Fig. 5 is a perspective of the form of support, here a spindle, preferred by me. F ig. 6 is a longitudinal section of a spindle supporting parts of different shape from those in Figs.

1 and 2.. Fig. 7 is a longitudinal section of. a mount in which the part mounted is re tained by two embodiments of my invention. Fig. 8 is a side elevation of a support of different cross section and adapted for a. mount between its ends. F ig. 9 is a perspective view corresponding to Fig. 5 but with Fig. 10 is a longitudinal section of a structure corresponding to Fig.

1 but making use of a head on the spindle with a shorter tube. Fig. 11 is a longitudinal section showing one construction embodying the parts in Fig. '10. y

This application is a division of my copending application for mount for tubular ilgirices, Serial No. 633,518, filed June 16,

While I have illustrated my invention as applied to the mounting of rotatable parts upon spindles of circular section for dental brush uses, it will be evident that its use is not confined to rotatable parts and that it will be suitable for mounting disks, felt buffers and other parts, most of them rotatable, of wide variety in this art, as well as a great variety of structures, whether rotatable or not, in other arts, such for example, as hoes and other garden utensils mounted by means of a ferrule or other tubular part, .wherever the parts can be held about or upon a support, pin, spindle or shaft by means of a tubular member laterally distorted locally by a part of the support.

Similar numerals of reference indicate like parts in the drawings.

1 designates a support, rotatable in the form shown in Figs. 1, 2 and 6, at whose end a dental brush is mounted. The brush forms a good illustration of my invention, bacause the structure surrounding the sleeve prevents access from the side to secure the parts by pinching, for example, while permitting the longitudinal movement of a sleeve during one of the movements necessary in constructing the brush.

The brush, in the forms illustrated, comprises retaining disks 2 or 2 and 3 or 3 which are pressed againstbristles 4. The bristles may be threaded about a ring 5 and the disks are retained in gripping posit-ion by the outwardly turned or flared ends 6, 7 of a tubular member which my invention secures to the shaft 1. The tubular member could itself carry or support any parts to be retained in other relations and not necessarily detached therefrom.

In the form of my invention shown, I compress the spindle, pin .or support transversely all the way across, preferably on both sides, to form flattened portions or grooves, as at 8, thus forcing the metal outwardly laterally at the ends of the grooves in the form of lugs, ears, humps, swellings or projections 9 so that the width in the direction of the flattened portion or groove at this point shall exceed the normal Width of the support in this direction or the diameter of the spindle.

I prefer to maintain a contour of perimeter as nearly e ual as possible to the circumference of t e spindle or support in order that the tubular member may not be permanently stretched in girth and, when reshaped by the succeeding portion of the spindle may fit it snugly. In the illustration given I forcethe spindle or support 1, longitudinally into a tubular member 10 having a contour initially substantially the same as that of the spindle or support, in either direction and either end forward, causing local stretching of the tube laterally at the point of the flattening of the support. The stretching is caused by the lugs or projections and results in the adjoining ma-- terial of the tube being drawn within the grooves.

Continued movement of the spindle or support into or through the tube results in the material of the tube being progressively bulged-at the point corresponding to the lugs or ears and drawn into the groove between at the same time that the portion thus previously drawn into the groove is progressively pressedoutwardly to its original diameter by the succeeding cylindrical part of the spindle or support. The out-ward pressing of the tube along the sides, restoring the width, in Fig. 1 the diameter, of the tube in this direction, results in a corresponding drawing in of the tube along the sides Where it has been bulged previously by the lugs or ears 9, substantially restoring tiie initial contour, whatever the previous s ape.

The extent of initial distortion of the tube and the approximation to restoration will depend upon the size of the lugs or ears and groove or flat portion, 71. e., the deviation from the initial shape, upon the tightness of fit of the tubular member and the thickness,

elasticity and malleability of the tube itself, I and should be selected and proportioned tosecure as little distortion and as complete restoration to shape as the requirements of the use intended permit. The distortion desirable for dental brush purposes has been exaggerated for purpose of clearness of illustration of this use. Brush mounts have been found not to require nearly the change of contour represented.

The length of spindle or support represented by the lugs or ears from the point 11 to the point 12 is also to'be selected and proportioned with reference to the length of the tubular member mounted thereon so that the restoration of the tube to shape may be complete, if possible, and the hold as well as the neatness of appearance, may be thus enhanced.

It will, be evident to all familiar with metal working that, in the example chosen, Figs. 1, 2 and 6, the straight end 13 of the tube shown in. Fig. 4 may be outwardly -turned to any desired extent after the disks 2 or 2 and 3 or 3 have been pressed together upon the bristles. A head, such as is shown in Fig. 10, or other stop may be made to take the place of the flange carried by one end of the tube. The stop may be located at any desired point along the spindle length. While I prefer, in these examples, to press the disks together, turn the end of the tube and force the spindle or pin into place by a single movement of a pair of dies, it will be evident that the outward turning of the end-13, where this is done, to I form the flange 6 may be done before or after the placing of the spindle within the tube. This makes it possible to seat the tubular member 10 upon the part of the spindle whose contour has been altered before, after or during the assemblage of the brush parts.

In Figs. 1 to -7 I contemplate the mount ing of a tubular member upon the end of a spindle because the part-s shown are ordinarily there mounted. In Fig. 8, however, I show the grooves 8 and lugs or ears 9 near the longitudinal center and the mount as square in section in order to'here point out that my invention is independent of the longitudinal posit-ion upon the support and'of the initial cross-sectional shape of the support and that this S pport need not be adapted for rotation.

In Fig. 6 I show a brush of different shape from that of the brushes in Figs. 1-4, mounted in the same manner as they are mounted.

In Fig. 7, I illustrate how two applications of my invention may be used to secure a relatively thick part to a shaft without a continuous tube, preferring to use two tubes in this form to using one long tube with a single variation in section at any desired point in its length. The. tubes are here pressed inwardly and are rigidly retained wherever they stop, as in every form, but

use but one end of the tube for retaining purposes.

In Fig. 9 I have shown a perspective corresponding generally to Fig. 5, showing a tubular member or sleeve upon a spindle of the type shown in Fig. -5 to illustrate the conformation of the tube to the shape of the spindle. The end of the tube is shown as projecting, but not flared.

In Fig. 10 I have illustrated the use of an enlargement, which, because of the position selected for the illustration, is shown as a head 14 rather than a collar or ring, upon the spindle. It is used in place of the flare of the end of the tube for cooperation with the tube to retain any structure upon a spindle or support. This is used here for retention of one of the disks of a dental brush. The tubular member in this illustrationis provided with a flange 6 but its end 13 is not intended to be flared. The tubular part is forced over the lugs 9 and the disks of the brush are intended to be held between the enlargement upon the spindle and the flared end 6 with the outer parts of the disk faces in compression against the bristles of the brush.

The use of the single tubular member here shown is the same in character as that made of each of the tubular members shown in Fig. 7 and this use would be the same independent of the position along the length of the support or spindle occupied by the cooperating collar, enlargement or ring 14. It will thus be seen that the longitudinal movement involved in my process does not interfere with any surrounding structure and that the distortion of the tube remains at the point of distortion of the mount only.

As best seen in Figs. 10 and 11, the distortion upon the mount may be used to stop movement in one direction only. In these forms the head upon the spindle is used to prevent movement tending to pass the sleeve over that end of the spindle and the distor tortion of the spindle is effective against movement away from the head chielly, if

not entirely, since the short sleeve has there been shoved so far toward the head as to leave practically no sleeve unaffected by the projections 9. All of it is there still distorted, or has been distorted and re-formed.

It will be evident that the article, or device which is to be mounted by my method, may be integral with the tubular member, or sustain any desired relation thereto at the wish of the designer.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. The process of securing a tubular fastener upon a support which consists in forcing the fastener longitudinally upon a support of generally uniform sectional shape altered at one point until a part of the tubular member has passed over the altered section and has been reshaped by the succeeding section.

2. The process of securing a tubular member u on a support which consists in forming t 1e support of differing cross sectional shapes having substantially the same perimeter in contiguous sections and forcing the tubular member so as to lie partly upon each of the differing sections of the support.

JAMES HERMAN ABBOTT.

Witnesses:

JAS. F. SULLIVAN, WM. STEELL JACKSON. 

